Display rack



FIG. 1 is a side elevational view of the display rack showing my new design; the other sides being identical thereto;

FIG. 2 is a perspective view thereof;

FIG. 3 is a bottom plan view thereof;

FIG. 4 is a top plan view thereof; and

FIG. 5 is a top plan view with the cap removed for convenience of illustration. 

The ornamental design for a display rack, substantially as shown and described. 